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Titre du document / Document title

Chitosan as a coating additive in paper and paperboard

Auteur(s) / Author(s)

KUUSIPALO Jurkka (1) ; KAUNISTO Marikki (1) ; LAINE Antti (2) ; KELLOMAKI Minna (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Tampere University of Technology Institute of Paper Converting, P.O. Box 541, 33101 Tampere, FINLANDE
(2) Tempera University of Technology, Institute of Biomaterials, P.O. Box 589, 33101 Tampere, FINLANDE

Résumé / Abstract

Chitosan can ba used as precoating, before extrusion coating, to give better adhesion and improve barrier properties. A chitosan from natural polysaccharide was studied as a potential additive in paper coating. Four chitosan solutions were made with concentrations of 0.1%, 0.25%, 0.5%, and 0.75% by weight of total dry coating weight. Bending strength was improved significantly, but tear index and tensile index were improved only slightly. Water absorption was slightly reduced. This preliminary study indicates that chitosan has good adhesion onto cellulose and could be used as an environmentally friendly coating material. Future studies will concentrate on the aroma and oxygen barrier propeflies of chitosan. Application: Coating paper with chitosan, an abundant material, improves its bending stiffness and MD tensile strength.

Revue / Journal Title

Tappi journal  

Source / Source

2005, vol. 4, no8, pp. 17-21 [5 page(s) (article)] (10 ref.)

Langue / Language

Anglais

Editeur / Publisher

TAPPI, Norcross, GA, ETATS-UNIS  (2002) (Revue)

Mots-clés anglais / English Keywords

Thickness

;

Opacity

;

Whiteness

;

Optical properties

;

Scanning electron microscopy

;

Stiffness

;

Water absorption

;

Tear strength

;

Mechanical properties

;

Bending strength

;

Concentration effect

;

Adhesion

;

Surface properties

;

Paperboard

;

Coating(paper)

;

Additive

;

Chitosan

;

Coated paper

;

Manufacturing

;

Experimental study

;

Mots-clés français / French Keywords

Epaisseur

;

Opacité

;

Blancheur

;

Propriété optique

;

Microscopie électronique balayage

;

Rigidité

;

Absorption eau

;

Résistance déchirement

;

Propriété mécanique

;

Résistance flexion

;

Effet concentration

;

Adhérence

;

Propriété surface

;

Carton

;

Couchage

;

Additif

;

Chitosane

;

Papier couché

;

Fabrication

;

Etude expérimentale

;

Mots-clés espagnols / Spanish Keywords

Espesor

;

Opacidad

;

Blancura

;

Propiedad óptica

;

Microscopía electrónica barrido

;

Rigidez

;

Absorción agua

;

Resistencia a la desgarradura

;

Propiedad mecánica

;

Resistencia flexión

;

Efecto concentración

;

Adherencia

;

Propiedad superficie

;

Cartón

;

Calado(papel)

;

Aditivo

;

Quitosano

;

Papel cuché

;

Fabricación

;

Estudio experimental

;

Localisation / Location

INIST-CNRS, Cote INIST : 27330, 35400013208872.0040

Nº notice refdoc (ud4) : 17130380



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